The CPU (Central Processing Unit), is the chip in the computer that actually performs the operations and calculations that are done as a program runs. It is essentially what executes a program.

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How to increase the system CPU load/utilization in Solaris 10 to test nagios?

I want to increase the system CPU load in Solaris 10 in order to test this scenario in Nagios. I'm running following command to get the CPU utitlization in Solaris: bash-3.00# sar -s 10 60 SunOS ...
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How cpu works in conky

I' m trying to setup conky and I saw that I can use from cpu0 to cpu4 CPU0 ${cpu cpu0}% ${cpubar cpu0} CPU1 ${cpu cpu1}% ${cpubar cpu1} CPU2 ${cpu cpu2}% ${cpubar cpu2} CPU3 ${cpu cpu3}% ${cpubar ...
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Running a Snow Leopard 10.6.7 Image on an AMD: The CPU has been disabled by the guest operating system

I am quite frustrated so I have turned to this medium in hoping to get an answer. After reading thousands of forums and trying out various methods (I have lost track what I have tried already) I still ...
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How to increase Xen guest CPU utilization?

My Xen dom0 is a Gentoo x64 pvops. I boot my guest Gentoo, in PV mode, system with the same kernel my dom0 uses. When I emerge in the guest system, building a CPP package, I am experiencing low CPU ...
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775 views

Overclocking software for Linux?

Is most overclocking done strictly at the BIOS level, or is there a way to do it from a running operating system? And if so, is there a way to do it from Linux? I'm running Ubuntu presently and am ...
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Disable processor speed changes on AC vs battery [closed]

My Toshiba Satellite L300 laptop freezes when I plug in the AC power cord. The problem is, whenever the processor goes in power management or downclocks, the system freezes and shows colorful ...
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How do you run CPU at turbo speed continuously

processor : 7 vendor_id : GenuineIntel cpu family : 6 model : 60 model name : Intel(R) Xeon(R) CPU E3-1230 v3 @ 3.30GHz stepping : 3 cpu MHz : 3299.670 ...
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kernel log in /var/log/messages: task xxx blocked blocked for more than 120 seconds . System frozen

Monit sent out emails in the morning that my java app on the server was not responding to HTTP calls made on the 127.0.0.1 interface. App log shows nothing out of the ordinary, nginx log shows no ...
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421 views

Intel Turbo Boost apparently activated for no reason?

The other day, I reinstalled my operating system (Crunchbang, fork of Debian). For some reason my fan has been running at full speed (and blowing colder-than-room-temperature air) even though I'm ...
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33 views

App consumes diferent %CPU if started at start-up or from prompt [closed]

I run an application in embedded system, and it needs to start at boot. However, I have a problem with it: when I execute it at boot (from rc.local script), it consumes nearly all the CPU, making the ...
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228 views

Why is the AESni flag missing for my i5 CPU

My CPU is reported by Intel to support the AES-NI native instructions. http://ark.intel.com/products/65707 However, /proc/cpuinfo does not list the aes flag (which is what I guess is preventing me ...
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120 views

FreeBSD 9,1 - upowerd's cpu consumption off the roof and causes OS to restart

I've been experiencing a really annoying problem with a FreeBSD setup on my laptop. The setup is as follows: FreeBSD 9.1 / KDE4 desktop / Broadcom wireless 4313 through NDIS / Intel GPU with the new ...
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493 views

How can a single thread use 200% CPU usage?

From the screenshot above of htop output you can see that mysql is apparently using 204% of CPU usage (this is a CentOS server with dual quad-core Intel Xeons). However only one core (8) is doing ...
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3answers
413 views

High CPU utilization with zip command

When I am using the zip utility in Linux to compress files, CPU utilization is going to 100%. Can anybody help me why CPU utilization is so high? I'm using the command: zip file_name *.xml
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Top “id” is using 50-99% of CPU

My i386 Lubuntu install is running with a constantly 100% CPU. Using top I have diagnosed "%id" as using up a lot of CPU, usually between about 50% and 99%. Why is this happening, and how can I stop ...
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2answers
110 views

Ubuntu 10.04 on 64bit

I need to download the 64bit version of Ubuntu 10.04, I found this link http://releases.ubuntu.com/lucid/ and select this option: PC (Intel x86) desktop CD But it is x86? And the other 64bit ...
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414 views

CPU governor settings

What are CPU governor settings? How can I get their values, if they're set? I have 24 vCPUs on my machine.
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596 views

How to maximize the use of computer performance Core i7 [closed]

How to maximize the use of computer performance Core i7 960 / 12GB Ram?. My operating system is Debian 6 (Linux kernel - 3.0.0-1-amd64). I think it does not work very quickly. Looking for some ways to ...
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67 views

Lower cpu performance in Linux [closed]

I have a problem with my CPU performance in Linux. I have a laptop, Toshiba Satellite C660-101. Despite the fact that the CPU works perfectly fine in Windows 7, Linux has some serious issues. ...
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81 views

What happens to the files when they are being decrypted?

I have the server's webroot directory mounted on a partition which is being protected with LUKS encryption. I want to know what happens to the files within when that partition is being decrypted. Does ...
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1answer
67 views

Why my cpu spend so much time on system? [closed]

top - 08:58:42 up 20 days, 8:23, 1 user, load average: 67.17, 58.94, 62.75 Tasks: 630 total, 40 running, 524 sleeping, 0 stopped, 66 zombie Cpu(s): 57.3%us, 41.6%sy, 0.0%ni, 0.0%id, 0.0%wa, ...
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When speaking about cache size of a CPU, we only need the size of the cache at the furthest level [closed]

When speaking about cache size of a CPU, do we only need to know the size of the cache at the furthest level (such as at level 3, when the cache hierachy is 3-level)? Instead of the sum of all the ...
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165 views

sar -P ALL command AIX 6.1

What is the meaning of - in the cpu column below? Is it average of all CPU cores? bash-3.00$ sar -P ALL 2 2 AIX tinapp1 1 6 00F6F78B4C00 11/27/13 System configuration: lcpu=4 mode=Capped 19:02:54 ...
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464 views

How to monitor average stats of CPU and memory usage of a Solaris server using scripts?

I need to monitor average CPU and memory usage for a Solaris server. How can I automate the process using scripts to monitor daily CPU and memory usage and give it as an average over a month?
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668 views

How can I start a process using cpulimit?

I am trying to use cpulimit for testing an app I'm developing under low resource conditions, and I need the process to start under the influence of cpulimit. It is not sufficient to start the program ...
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Limit CPU and memory usage for PHP-FPM and Nginx processes in CentOS

I want to limit CPU and memory usage for PHP-FPM and Nginx processes in CentOS. I came across following tools cpulimit cggroups memory resource locater which will more efficient and how can I ...
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101 views

Does loadavg affect CPU usage?

Does loadavg affect the CPU usage? Say I see a process consuming 60% of CPU time, both when loadavg (last minute) was 5 and 1, would it be the same?
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17 views

File to access for CPU load average on AIX

Is there a file with the load average in it on AIX? I'm looking for something like Linux's /proc/loadavg.
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22 views

CPU Frequency Scaling Monitor: No passwd, all cores at once

I use MATE 1.6.2 and CPU Frequency Scaling Monitor 1.6.2. I would like two things: Get rid of the need of the root password to change the CPU settings. To affect all cores at once. The problem is ...
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29 views

Disable CPU scaling with U 1404

I know there are a lot of things about this topic but I couldn't find anything not older than 4 years. As the stuff develops so fast I hope it is fine to ask again a few years later. What is ...
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134 views

NVIDIA: could not open the device file /dev/nvidia0 (Operation not permitted)

When I try to run chrome/ium on command line it says NVIDIA: could not open the device file /dev/nvidia0` (Operation not permitted) I don't know whether its related with high CPU usage on ...
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42 views

Having an independent console to kill rogue process?

Sometimes a flash plugin starts using all the mem and CPU or an app is also behaving "naughtily" and my system starts to crawl until i finally get a terminal with htop up and kill the rogue process, ...
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Limit CPU/RAM usage per user? [duplicate]

I'm running game server applications on dedicated server that I have, but I want to be able to limit the CPU/RAM/etc usage on a per-user basis to make sure one of the servers doesn't eat up more ...
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116 views

Monitor CPU Registers

I'm looking for such tool, to see state of CPU registers, eax, ebx, ecx, edx. I've discovered cpuid: eax in eax ebx ecx edx 00000000 0000000d 756e6547 6c65746e 49656e69 00000001 ...
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CPU usage monitoring in AIX servers

In order to monitor the CPU usage in an AIX server I'm using the following script that is executed every 10 mins. lparstat 2 10 > cpu usage=$(tail -10 cpu | awk 'BEGIN {sum=0;} {sum+=$4} END{print ...
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501 views

Linux Mint CPU cores balancing and high temprature

I'm using Linux Mint. My laptop has a Corei5 CPU. When I check the system monitor, it shows that the CPU 1 usage is between 90 to 100% and CPU 2,3,4 are less than 5%. why it doesn't balance processes ...
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267 views

Samba daemon hammering CPU on CentOS 5.6 VM on bootup

I have a problem where my Centos 5.6 VM is running very slow on my Win7 machine, and looking at top I can see that the Samba daemon smbd is sitting at the top of the list hitting the CPU big time, ...
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Prevent Java to escalate CPU usage on Slackware64?

I use Slackware64-current on my work laptop and though I love running Slackware, sometimes it hangs on me near to the point of starting considering falling back to Windows. I develop on Java and use ...
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applications that would benefit having a 64bit Os on a 64bit cpu with maximum of 4gb ram [closed]

I am trying to find out for which kind of applications (cpu intensive, io intensive, good mix of cpu/io apps) it is worth putting a 64 bit Os on 64 bit hardware instead of a 32 bit os where the Ram ...
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0answers
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Linux (Xubuntu) ram and cpu usage [duplicate]

I'd like to know if Linux is able to see and use all available ram and cpu. The reason why i ask is because in my Macbook for example i can not add more ram because it can read and use just 2GB, it is ...